Condensing unit



Dec. 8, 1970 KEIICHI KIMURA CONDENS ING UNI T Filed Nov. 12. 1968 INVENTOR KEIICHI ,KIMURA ATTORNEY United States Patent O1 .lice

3,545,229 Patented Dec. 8, 1970 3,545,229 CONDENSING UNIT Keiichi Kimura, Osakabe 3044, Osaka-fu, Yao, Japan Filed Nov. 12,1968, Ser. No. 774,929 Claims priority, application Japan, July 12, 1968, 43/49,374 Int. Cl. F25!) 39/04 US. Cl. 62-508 1 Claim ABSTRACT OF THE DISCLOSURE Condensing unit in which the compressor and receiving tank are located in the lower portion of the container, the blower and motor are located above the foregoing, and the condenser is located above the blower and motor whereby the blower can draw air through a bottom portion vent to contact the compressor and receiving tank and the condenser before exhausting through a top portion vent.

This invention relates to a condensing unit to be used for such a cooling apparatus for instance as either a refrigerator for cold storage of fruits, fish, meat, vegetables and other perishable foods or an air-conditioning apparatus for keeping a room or an enclosure at a suitable temperature.

According to the conventional method of forming a condensing unit, the cooling media comprising a condenser, a blower and a compresser are positioned on a flat base laterally thereof in parallel to each other. Namely, these cooling media are composed in such a manner as to occupy the space equal to their bottom area on one and the same surface. Thus a comparatively large space is required for installing a condensing unit of this conventional type. However, there cannot be always secured an ample space when it is really necessary to install the condensing unit and on most occasions, the position where the unit is to be installed is extremely restricted subject to the space and circumferential conditions of the localized installation place. This position is also restricted subject to the area of the installation place and if there exists an impedimental object such as a wall element in the way of the place adjoining the surface of either a pneumatic inlet or a pneumatic outlet of the apparatus, then it would be impossible to allow the inlet to inhale a sufficient quantity of air for maintaining the fixed efficiency of condensation and it would also be impossible to allow the apparatus to accomplish its most desired cooling effect because heated waste air is mixed up into the fresh air when this air is inhaled and consequently the condensing effect of the apparatus is considerably lowered.

The present invention has been made for the purpose of eliminating these afore-mentioned deficiencies generally common to the condensing unit of conventional type, having for one of its principal objectives a provision of such a condensing unit that can be constructed upon the whole in the reduced-size form with respect to its plane surface and also can be installed even in a limitedly localized place without lowering the condensing effect. Another objective of the invention is to provide a con densing unit whose condensing eifect is by far greater is provided in the upper portion thereof and a condenser 1s fixed laterally on the surface above said upper portion of the box, whereby these three elements are located in a file and the air inhaled from the down part of the box 1s jetted out in the peripendicular direction.

The particulars of the invention are as explained in the succeeding description made with. respect to the accompained drawings, and its feature and novelty are as defined in what is claimed in this specification.

Referring to each figure of the accompanied drawings, some of the embodiments of the present invention are illustrative of a condensing unit and therein;

FIG. 1 is afrontal surface view partially in section showing oneof the embodiments of the'invention.

FIG. 2 is a flank view thereof.

Setting forth each figure of the embodiments carried out in accordance with the invention, reference numeral 1 than that of the conventional condensing unit which makes designates a box of rectangular form on Whose bottom 1 there are located a compresser 2, a receiving tank 3 and a box for electrical means 4 on a level with each other. The box 1 is formed in the minimum width in which it can correspond with the maximum width of the compresser 2 and yet permit this compresser 2 to be provided in the box 1. With respect to the length of the box 1, it is not altogther confined in a particular size, but yet it is necessary to take the shortest length within which it permits all the afore-mentioned cooling means to be provided. Reference numeral '5 designates a motor fixed on the upper portion of said cooling means, being located approximately in the intermediate position of the box 1 laterally thereof. On both sides of said motor 5 are extended the rotary shafts 6, 6'. Fans 7, 7' are movably connected to these rotary shafts 6, 6'. Said motor 5 and fans 7, 7 are supportedly held respectively by means of a supporting plate 8 fixed on the box 1. Above the fans 7, 7' there is a condenser 8 which comprises condensing pipes 10 and fins 11 and is provided on the uppermost opening of the box 1 almost therethrough. One end of said pipes 10 of the condenser 9 and the compresser 2 are connected with each other by means of a connecting pipe 12, and the other end of said pipes 10 of the condenser 9 and the receiving tank 3 are both connected by means of a connecting pipe 13 so that a circuit for cooling media is formed with this connecting pipe 12, condenser 9, connecting pipe 13 and receiving tank 3. At the end of both the inlet and the outlet of the circuit for cooling media are provided joints 14 and 15 which are connected on the side of either a refrigerater or an ainconditioning apparatus. Numeral 14 denotes the joint of the inlet edge and 15 denotes the joint of the outlet edge respectively. Said joint 14 for the inlet edge is communicated with the compresser 2 and in the intermediate portion thereof is located a strainer 16, while said joint 15 of the outlet edge is communicated with the receiving tank 3 and in the intermediate portion thereof is located a dryer 17. On one side of the box 1 and lengthwise thereof is provided an air suction aperture 18. A cover 19 for the condenser 9 is provided on the opening of the box 1 in order to form the air-discharge opening.

Now referring to the function and utilization of thus constructed box 1, this is communicated through the joints 14 and 15 with a suitable means such for example as an air-cooling apparatus, not shown in the accompanied drawings, provided in a differently localized place and when this air-cooling apparatus is operated by means of said joints 14 and 15 in a conventional way, the cooling media which has been returned from said air-cooling apparatus passes through a strainer 16 in the direction of an arrow and enters into the compresser 2, wherein said cooling media is compressed to be fed into the condenser 9 through the connecting pipe 12. Then the cooling media is deprived of its cooled volume under the influence of the blowing of the fans 7, 7 and then delivered through the connecting pipe 13 into the receiving tank 3, arriving at the joint 15 through the dryer 17, ultimately to be restored into the air-cooling apparatus. Afterwards, this cooling circulation is repeatedly proceeded just in the same way as has been mentioned. When in operation, the fans 7, 7 inhale from the air-suction aperture 18 the fresh air which is not mingled with waste air. The air inhaled from said air-suction aperture 18 is absorbed up perpendicularly of the box 1 and then exhausted outward of this box.

As has been mentioned of the present invention, the means for circulating the cooling media is arranged on the lowermost bottom of the box and said cooling media passing through this means is fed into the condenser provided on the uppermost portion of the box; within the space occupied between this condenser and the cooling media are positioned the fans. Accordingly it is to be noted that these three elements comprising the cooling means, fans and condenser are vertically constructed in such a manner that the whole form is short in width and long in length. Owing to this form, therefore, it is possible to place the cooling apparatus in an extremely localized area and yet maintain its cooling effect without decreasing the condensing power. In addition it is also possible to install this cooling apparatus in a state where its one side is faced to a wall element of the area because it is one the whole formed longitudinal lengthy. Furthermore, being covered with the box constructed short in width and long in length as has just been mentioned above, the apparatus of the present invention can induce the air to be inhaled in from the lower portion of the box and let it blow up along therewith. Thus there is neither an anxiety of inhaling the heated Waste air in, nor a fear of causing a vortical current since the stream of the inhailed air runs down along the inside of the box in a straight line. As a consequence, this makes it possible to very efficiently supply the freshly cooled air continuously into the condenser and increasing conspicuously the heat-exchanging, and convective current eifect thereby heightening double that cooling effect which is generally secured only when in use of the conventional condensing unit. Incidentally, in the embodiments of the present invention it is most preferable to employ a siroccotype fan as one of the most suitable means just as has been referred to. Thus by use of this siroccotype fan it is possible to operate the apparatus with the least noise accompanied and also it is further possible to install the same in a comparatively smaller area than when a propeller-type blower is adapted, thereby making it possible to materialize the purposes of this invention more effectively.

All that has been set forth herein is not to be restricted within itself but merely illustrative of the invention and it is also applicable to some other embodiments of the cooling apparatus.

What is claimed is:

1. Condensing unit comprising (1) rectangular box like frame means having a longer vertical dimension than horizontal dimension;

(2) compressor means located in a lower portion of said frame means; 1

(3) receiving tank located in said lower portion;

(4) electrical switch means for controlling operation of said condensing unit located in said lower portion;

(5) support means attached to said frame means towards an upper portion thereof and above said lower portion;

(6) electrical motor means supported by and located below said support means;

(7) blower means supported by and located below said support means and driven by said motor means under the control of said switch means, said blower means being disposed to blow air upwards;

(8) condenser means located above said support means and comprising a serpentine shaped pipe and a plurality of fins attached thereto;

(9) first conduit means connecting said compressor means to said condenser means;

(10) second conduit means connecting said condenser means to said receiving tank;

(11) first connecting means for connecting said compressor means to an inlet located on said frame means;

(12) second connecting means for connecting said receiving tank to an outlet located on said frame means;

(13) saidframe means having an exhaust opening above said condenser means and a feed opening at said lower portion, whereby said switching means controls said motor means to drive said blower means to draw in air through said feed opening and upwards with chimney like action to contact said compressor means, said receiving tank and said condenser means before being exhausted through said exhaust opening and concurrently therewith a cooling medium circulates through a system comprising said inlet, said first connecting means, said compressor means, said first conduit means, said condenser means, said second conduit means, said receiving tank, said second connecting means and said outlet.

References Cited UNITED STATES PATENTS 2,250,978 7/1941 Weiland 62262 2,286,491 6/ 1942 Kucher 62426 3,330,131 7/1967 Papst 62507 MEYER PERLIN, Primary Examiner 

